Ankle/Foot Muscle Actions, Origins, and Insertions (week 5)

Question 1

state the names of the 3 anterior muscles

Answer 1

1. tibialis anterior
2. extensor hallicus longus
3. extensor digitorum longus

Question 2

state the names of the 3 lateral muscles

Answer 2

1. peroneus longus
2. peroneus brevis
3. peroneus tertius

Question 3

state the names of the 6 posterior muscles

Answer 3

1. popliteus
2. tibialis posterior
3. flexor hallicus longus
4. flexor digitorum longus
5. gastrocnemius (fast twitch)
6. soleus (slow twitch)

Question 4

state the action(s) of the - tibialis anterior

Answer 4

ankle dorsi flexion, foot inversion

Question 5

state the action(s) of the - extensor digitorum longus

Answer 5

extensor of the 4 lesser toes, dorsi flexion, eversion

Question 6

state the action(s) of the - extensor hallicus longus

Answer 6

extensor of the greater toe, dorsi flexion, inversion

Question 7

state the action(s) of the - gastrocnemius

Answer 7

knee flexion, ankle planter flexion

Question 8

state the action(s) of the - soleus

Answer 8

planter flexion, completes the ‘triceps surae complex’

Question 9

state the action(s) of the - tibialis posterior

Answer 9

planter flexion, inversion of the foot

Question 10

state the action(s) of the - flexor digitorum longus

Answer 10

flexion of the 4 lesser toes, planter flexion, inversion

Question 11

state the action(s) of the - flexor hallicus longus

Answer 11

flexor of the great toe, planter flexion, inversion

Question 12

state the action(s) of the - peroneus longus

Answer 12

eversion, planter flexion

Question 13

state the action(s) of the - peroneus brevis

Answer 13

eversion, planter flexion

Question 14

state the action(s) of the - peroneus tertius

Answer 14

eversion, dorsi flexion

Question 15

state the origin point(s) of the - tibialis anterior

Answer 15

lateral condyle of the tibia, interosseous membrane

Question 16

state the origin point(s) of the - extensor digitorum longus

Answer 16

upper 1/3 anterior surface fibula, lateral condyle tibia, interosseous membrane

Question 17

state the origin point(s) of the - extensor hallicus longus

Answer 17

upper 1/2 anterior surface fibula

Question 18

state the origin point(s) of the - gastrocnemius

Answer 18

1. lateral surface of the posterior surface of femur (LH)

2. popliteal surface of femur, above medial condyle (MH)

Question 19

state the origin point(s) of the - soleus

Answer 19

upper 1/3 posterior surface tibia, upper 1/3 posterior surface fibula

Question 20

state the origin point(s) of the - tibialis posterior

Answer 20

lateral posterior surface tibia, posterior surface fibula, interosseous membrane

Question 21

state the origin point(s) of the - flexor digitorum longus

Answer 21

medial 1/3 posterior surface of the tibia

Question 22

state the origin point(s) of the - flexor hallicus longus

Answer 22

lower 1/3 posterior surface fibula, interosseous membrane

Question 23

state the origin point(s) of the - peroneus longus

Answer 23

upper 1/3 lateral surface femur, and femoral head

Question 24

state the origin point(s) of the - peroneus brevis

Answer 24

mid to lower 1/3 of the lateral surface of fibula

Question 25

state the origin point(s) of the - peroneus tertius

Answer 25

lower 1/3 anterior surface fibula, interosseous membrane

Question 26

state the insertion point(s) of the - tibialis anterior

Answer 26

medial surface of medial cuneiform bone, and MT1 (1st metatarsal)

Question 27

state the insertion point(s) of the - extensor digitorum longus

Answer 27

dorsal aspect of middle + distal phalanges of 4 lesser toes

Question 28

state the insertion point(s) of the - extensor hallicus longus

Answer 28

base of distal phalanx of great toe

Question 29

state the insertion point(s) of the - gastrocnemius

Answer 29

posterior surface calcaneus via Achilles tendon

Question 30

state the insertion point(s) of the - soleus

Answer 30

posterior surface calcaneus via Achilles tendon

Question 31

state the insertion point(s) of the - tibialis posterior

Answer 31

tuberosity of navicular, cuboid, cuneiform bones, and MT 1-4

Question 32

state the insertion point(s) of the - flexor digitorum longus

Answer 32

base of distal phalanges 2-5 (planter surface)

Question 33

state the insertion point(s) of the - flexor hallicus longus

Answer 33

base of distal phalanx of the great toe (planter surface)

Question 34

state the insertion point(s) of the - peroneus longus

Answer 34

planter surface medial cuneiform bone, and MT1

Question 35

state the insertion point(s) of the - peroneus brevis

Answer 35

tuberosity of MT5

Question 36

state the insertion point(s) of the - peroneus tertius

Answer 36

dorsal surface of the base of MT5

Question 37

what makes up the ‘tricep surae’ complex?

Answer 37

the lateral and medial head of the gastrocnemius as well as the soleus